apps/ec.c

   1 /* apps/ec.c */
   2 /*
   3  * Written by Nils Larsch for the OpenSSL project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    openssl-core@openssl.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #ifndef OPENSSL_NO_EC
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include "apps.h"
  64 #include <openssl/bio.h>
  65 #include <openssl/err.h>
  66 #include <openssl/evp.h>
  67 #include <openssl/pem.h>
  68
  69 #undef PROG
  70 #define PROG    ec_main
  71
  72 /* -inform arg    - input format - default PEM (one of DER, NET or PEM)
  73  * -outform arg   - output format - default PEM
  74  * -in arg        - input file - default stdin
  75  * -out arg       - output file - default stdout
  76  * -des           - encrypt output if PEM format with DES in cbc mode
  77  * -text          - print a text version
  78  * -param_out     - print the elliptic curve parameters
  79  * -conv_form arg - specifies the point encoding form
  80  * -param_enc arg - specifies the parameter encoding
  81  */
  82
  83 int MAIN(int, char **);
  84
  85 int MAIN(int argc, char **argv)
  86 {
  87 #ifndef OPENSSL_NO_ENGINE
  88         ENGINE  *e = NULL;
  89 #endif
  90         int     ret = 1;
  91         EC_KEY  *eckey = NULL;
  92         const EC_GROUP *group;
  93         int     i, badops = 0;
  94         const EVP_CIPHER *enc = NULL;
  95         BIO     *in = NULL, *out = NULL;
  96         int     informat, outformat, text=0, noout=0;
  97         int     pubin = 0, pubout = 0, param_out = 0;
  98         char    *infile, *outfile, *prog, *engine;
  99         char    *passargin = NULL, *passargout = NULL;
 100         char    *passin = NULL, *passout = NULL;
 101         point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
 102         int     new_form = 0;
 103         int     asn1_flag = OPENSSL_EC_NAMED_CURVE;
 104         int     new_asn1_flag = 0;
 105
 106         apps_startup();
 107
 108         if (bio_err == NULL)
 109                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 110                         BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
 111
 112         if (!load_config(bio_err, NULL))
 113                 goto end;
 114
 115         engine = NULL;
 116         infile = NULL;
 117         outfile = NULL;
 118         informat = FORMAT_PEM;
 119         outformat = FORMAT_PEM;
 120
 121         prog = argv[0];
 122         argc--;
 123         argv++;
 124         while (argc >= 1)
 125                 {
 126                 if (strcmp(*argv,"-inform") == 0)
 127                         {
 128                         if (--argc < 1) goto bad;
 129                         informat=str2fmt(*(++argv));
 130                         }
 131                 else if (strcmp(*argv,"-outform") == 0)
 132                         {
 133                         if (--argc < 1) goto bad;
 134                         outformat=str2fmt(*(++argv));
 135                         }
 136                 else if (strcmp(*argv,"-in") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         infile= *(++argv);
 140                         }
 141                 else if (strcmp(*argv,"-out") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         outfile= *(++argv);
 145                         }
 146                 else if (strcmp(*argv,"-passin") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         passargin= *(++argv);
 150                         }
 151                 else if (strcmp(*argv,"-passout") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         passargout= *(++argv);
 155                         }
 156                 else if (strcmp(*argv, "-engine") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         engine= *(++argv);
 160                         }
 161                 else if (strcmp(*argv, "-noout") == 0)
 162                         noout = 1;
 163                 else if (strcmp(*argv, "-text") == 0)
 164                         text = 1;
 165                 else if (strcmp(*argv, "-conv_form") == 0)
 166                         {
 167                         if (--argc < 1)
 168                                 goto bad;
 169                         ++argv;
 170                         new_form = 1;
 171                         if (strcmp(*argv, "compressed") == 0)
 172                                 form = POINT_CONVERSION_COMPRESSED;
 173                         else if (strcmp(*argv, "uncompressed") == 0)
 174                                 form = POINT_CONVERSION_UNCOMPRESSED;
 175                         else if (strcmp(*argv, "hybrid") == 0)
 176                                 form = POINT_CONVERSION_HYBRID;
 177                         else
 178                                 goto bad;
 179                         }
 180                 else if (strcmp(*argv, "-param_enc") == 0)
 181                         {
 182                         if (--argc < 1)
 183                                 goto bad;
 184                         ++argv;
 185                         new_asn1_flag = 1;
 186                         if (strcmp(*argv, "named_curve") == 0)
 187                                 asn1_flag = OPENSSL_EC_NAMED_CURVE;
 188                         else if (strcmp(*argv, "explicit") == 0)
 189                                 asn1_flag = 0;
 190                         else
 191                                 goto bad;
 192                         }
 193                 else if (strcmp(*argv, "-param_out") == 0)
 194                         param_out = 1;
 195                 else if (strcmp(*argv, "-pubin") == 0)
 196                         pubin=1;
 197                 else if (strcmp(*argv, "-pubout") == 0)
 198                         pubout=1;
 199                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 200                         {
 201                         BIO_printf(bio_err, "unknown option %s\n", *argv);
 202                         badops=1;
 203                         break;
 204                         }
 205                 argc--;
 206                 argv++;
 207                 }
 208
 209         if (badops)
 210                 {
 211 bad:
 212                 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 213                 BIO_printf(bio_err, "where options are\n");
 214                 BIO_printf(bio_err, " -inform arg     input format - "
 215                                 "DER or PEM\n");
 216                 BIO_printf(bio_err, " -outform arg    output format - "
 217                                 "DER or PEM\n");
 218                 BIO_printf(bio_err, " -in arg         input file\n");
 219                 BIO_printf(bio_err, " -passin arg     input file pass "
 220                                 "phrase source\n");
 221                 BIO_printf(bio_err, " -out arg        output file\n");
 222                 BIO_printf(bio_err, " -passout arg    output file pass "
 223                                 "phrase source\n");
 224                 BIO_printf(bio_err, " -engine e       use engine e, "
 225                                 "possibly a hardware device.\n");
 226                 BIO_printf(bio_err, " -des            encrypt PEM output, "
 227                                 "instead of 'des' every other \n"
 228                                 "                 cipher "
 229                                 "supported by OpenSSL can be used\n");
 230                 BIO_printf(bio_err, " -text           print the key\n");
 231                 BIO_printf(bio_err, " -noout          don't print key out\n");
 232                 BIO_printf(bio_err, " -param_out      print the elliptic "
 233                                 "curve parameters\n");
 234                 BIO_printf(bio_err, " -conv_form arg  specifies the "
 235                                 "point conversion form \n");
 236                 BIO_printf(bio_err, "                 possible values:"
 237                                 " compressed\n");
 238                 BIO_printf(bio_err, "                                 "
 239                                 " uncompressed (default)\n");
 240                 BIO_printf(bio_err, "                                  "
 241                                 " hybrid\n");
 242                 BIO_printf(bio_err, " -param_enc arg  specifies the way"
 243                                 " the ec parameters are encoded\n");
 244                 BIO_printf(bio_err, "                 in the asn1 der "
 245                                 "encoding\n");
 246                 BIO_printf(bio_err, "                 possilbe values:"
 247                                 " named_curve (default)\n");
 248                 BIO_printf(bio_err,"                                  "
 249                                 "explicit\n");
 250                 goto end;
 251                 }
 252
 253         ERR_load_crypto_strings();
 254
 255 #ifndef OPENSSL_NO_ENGINE
 256         e = setup_engine(bio_err, engine, 0);
 257 #endif
 258
 259         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
 260                 {
 261                 BIO_printf(bio_err, "Error getting passwords\n");
 262                 goto end;
 263                 }
 264
 265         in = BIO_new(BIO_s_file());
 266         out = BIO_new(BIO_s_file());
 267         if ((in == NULL) || (out == NULL))
 268                 {
 269                 ERR_print_errors(bio_err);
 270                 goto end;
 271                 }
 272
 273         if (infile == NULL)
 274                 BIO_set_fp(in, stdin, BIO_NOCLOSE);
 275         else
 276                 {
 277                 if (BIO_read_filename(in, infile) <= 0)
 278                         {
 279                         perror(infile);
 280                         goto end;
 281                         }
 282                 }
 283
 284         BIO_printf(bio_err, "read EC key\n");
 285         if (informat == FORMAT_ASN1)
 286                 {
 287                 if (pubin)
 288                         eckey = d2i_EC_PUBKEY_bio(in, NULL);
 289                 else
 290                         eckey = d2i_ECPrivateKey_bio(in, NULL);
 291                 }
 292         else if (informat == FORMAT_PEM)
 293                 {
 294                 if (pubin)
 295                         eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
 296                                 NULL);
 297                 else
 298                         eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
 299                                 passin);
 300                 }
 301         else
 302                 {
 303                 BIO_printf(bio_err, "bad input format specified for key\n");
 304                 goto end;
 305                 }
 306         if (eckey == NULL)
 307                 {
 308                 BIO_printf(bio_err,"unable to load Key\n");
 309                 ERR_print_errors(bio_err);
 310                 goto end;
 311                 }
 312
 313         if (outfile == NULL)
 314                 {
 315                 BIO_set_fp(out, stdout, BIO_NOCLOSE);
 316 #ifdef OPENSSL_SYS_VMS
 317                         {
 318                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 319                         out = BIO_push(tmpbio, out);
 320                         }
 321 #endif
 322                 }
 323         else
 324                 {
 325                 if (BIO_write_filename(out, outfile) <= 0)
 326                         {
 327                         perror(outfile);
 328                         goto end;
 329                         }
 330                 }
 331
 332         group = EC_KEY_get0_group(eckey);
 333
 334         if (new_form)
 335                 EC_KEY_set_conv_form(eckey, form);
 336
 337         if (new_asn1_flag)
 338                 EC_KEY_set_asn1_flag(eckey, asn1_flag);
 339
 340         if (text)
 341                 if (!EC_KEY_print(out, eckey, 0))
 342                         {
 343                         perror(outfile);
 344                         ERR_print_errors(bio_err);
 345                         goto end;
 346                         }
 347
 348         if (noout)
 349                 goto end;
 350
 351         BIO_printf(bio_err, "writing EC key\n");
 352         if (outformat == FORMAT_ASN1)
 353                 {
 354                 if (param_out)
 355                         i = i2d_ECPKParameters_bio(out, group);
 356                 else if (pubin || pubout)
 357                         i = i2d_EC_PUBKEY_bio(out, eckey);
 358                 else
 359                         i = i2d_ECPrivateKey_bio(out, eckey);
 360                 }
 361         else if (outformat == FORMAT_PEM)
 362                 {
 363                 if (param_out)
 364                         i = PEM_write_bio_ECPKParameters(out, group);
 365                 else if (pubin || pubout)
 366                         i = PEM_write_bio_EC_PUBKEY(out, eckey);
 367                 else
 368                         i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
 369                                                 NULL, 0, NULL, passout);
 370                 }
 371         else
 372                 {
 373                 BIO_printf(bio_err, "bad output format specified for "
 374                         "outfile\n");
 375                 goto end;
 376                 }
 377
 378         if (!i)
 379                 {
 380                 BIO_printf(bio_err, "unable to write private key\n");
 381                 ERR_print_errors(bio_err);
 382                 }
 383         else
 384                 ret=0;
 385 end:
 386         if (in)
 387                 BIO_free(in);
 388         if (out)
 389                 BIO_free_all(out);
 390         if (eckey)
 391                 EC_KEY_free(eckey);
 392         if (passin)
 393                 OPENSSL_free(passin);
 394         if (passout)
 395                 OPENSSL_free(passout);
 396         apps_shutdown();
 397         OPENSSL_EXIT(ret);
 398 }
 399 #endif